bidirectional cross resistance

例句：

1. 1.The design of the bridge is bidirectional cross resistance, which makes it difficult to build.
   这座桥的设计是双向交叉阻力，这使得建造变得困难。
2. 2. The research on the bidirectional cross resistance has been a hot topic in recent years.
   关于双向交叉阻力的研究近年来一直是热门话题。
3. 3.In order to improve the performance of the bridge, engineers need to study the bidirectional cross resistance.
   为了提高桥梁的性能，工程师需要研究双向交叉阻力。